package com.razorthink.shell.commands.essential;

import java.io.File;

import org.apache.ecs.html.BR;
import org.apache.ecs.html.Body;
import org.apache.ecs.html.Center;
import org.apache.ecs.html.Div;
import org.apache.ecs.html.H2;
import org.apache.ecs.html.HR;
import org.apache.ecs.html.Head;
import org.apache.ecs.html.Html;
import org.apache.ecs.html.P;
import org.apache.ecs.html.Script;
import org.apache.ecs.html.Style;
import org.apache.ecs.html.TD;
import org.apache.ecs.html.TH;
import org.apache.ecs.html.TR;
import org.apache.ecs.html.Table;
import org.apache.ecs.html.Title;
import org.apache.ecs.wml.A;
import org.apache.ecs.wml.Tr;

import com.razorthink.shell.core.AbstractCommand;
import com.razorthink.shell.utils.CommandLogger;
import com.razorthink.shell.utils.FileUtils;

public class GenDoc extends AbstractCommand {
	private TD leftBodyPane, rightBodyPane;

	public GenDoc(String baseCommand, int params) {
		super(baseCommand, params);
	}

	@Override
	public void execute() {
		String filePath = super.getCommandParser().getParams().get(0);
		if (!filePath.endsWith(".html")) {
			filePath += ".html";
		}
		File docFile = new File(filePath);
		// if (docFile.exists()) {
		// docFile = new File(docFile.getAbsolutePath() + "_new.html");
		// }
		try {
			generateDoc(docFile);
		} catch (Exception e) {
			CommandLogger.logInfo("Failed to generating document '"
					+ docFile.getAbsolutePath() + "'");
		}
	}

	public void generateDoc(File docFile) throws Exception {
		String htmlString = "";
		Html html = new Html();
		Title title = new Title("Shell Documentation");
		Body body = new Body();
		Table mainSplitBodyTable = getSplitBodyTable();
		addRightPaneElements();
		addLeftPaneElements();
		body.addElement(mainSplitBodyTable);
		html.addElement(title);
		html.addElement(getHead());
		html.addElement(body);
		html.addElement(getFooter());
		htmlString = html.toString();
		FileUtils.writeToFile(docFile.getAbsolutePath(), htmlString);
		CommandLogger.logInfo("Generated document '"
				+ docFile.getAbsolutePath() + "'");
	}

	public P getFooter() {
		return getParagraph(
				getAnchorTag("Razorthink", "http://www.razorthink.com")
						+ " &copy 2013. All rights reserved.", "p-footer");
	}

	public Head getHead() {
		Head headText = new Head();
		headText.addElement(getCSSstyle());
		headText.addElement(getScript());
		H2 header = new H2();
		header.setClass("header-wrapper");
		header.setTagText("Deployment Shell Specification");
		headText.addElement(header);
		return headText;
	}

	public P getParagraph(String text, String className) {
		P paragraph = new P();
		paragraph.setClass(className);
		paragraph.setTagText(text);
		return paragraph;
	}

	public P getCodeBlock(String text) {
		P codeBlock = new P();
		codeBlock.setClass("codeblock");
		codeBlock.setTagText(text);
		return codeBlock;
	}

	public Style getCSSstyle() {
		String styleString = ".codeblock {border: 1px solid #005cb9; border-radius:10px; background-color: #f1f5f9; overflow: auto; padding: 15px; font-family: Consolas, Menlo, Monaco, Lucida Console, Liberation Mono, DejaVu Sans Mono, Bitstream Vera Sans Mono, Courier New, monospace, serif;}"
				+ "th {background-color: #CCCCFF;}"
				+ ".header-wrapper {text-align:center; width: 100%; left: 0px; top: -20px; background: none repeat scroll 0 0 #FFFFFF; background: -moz-linear-gradient(center top , rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.85)) repeat scroll 0 0 transparent;border-bottom: 1px solid #FFFFFF;box-shadow: 0 8px 19px rgba(0, 0, 0, 0.36); z-index: 1000;}"
				+ ".cmd-table {text-align: left; padding: 5px 5px; border: 1px dotted #d4d4d4; background-color: #e8ecef}"
				+ ".p-footer {text-align: center}"
				+ ".details-div {border: 1px dashed gray; background-color: #f1f1f1; overflow: auto; padding: 15px; padding-bottom: 20px; font-family: DejaVu Sans Mono, Bitstream Vera Sans Mono, monospace, serif;}"
				+ ".details-div h2 {color: #0e84b5;}"
				+ ".details-div li {color: black;}"
				+ ".left-pane {top: 55px; text-align: left; vertical-align:top; padding: 15px 15px; border: 1px dotted #1279C6; background-color: #e8ecef}"
				+ ".right-pane {text-align: left; padding: 4px 15px; border: 1px dotted #1279C6;}"
				+ ".desc-heading {color: black ;font-family: Consolas, Menlo, Monaco, Lucida Console, Liberation Mono, DejaVu Sans Mono, Bitstream Vera Sans Mono, Courier New, monospace, serif;}";
		Style style = new Style();
		style.setType("text/css");
		style.setTagText(styleString);
		return style;
	}

	public Script getScript() {
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b.fx.speeds?b.fx.speeds[r.duration]:b.fx.speeds._default,(null==r.queue||r.queue===!0)&&(r.queue='fx'),r.old=r.complete,r.complete=function(){b.isFunction(r.old)&&r.old.call(this),r.queue&&b.dequeue(this,r.queue)},r},b.easing={linear:function(e){return e},swing:function(e){return.5-Math.cos(e*Math.PI)/2}},b.timers=[],b.fx=rr.prototype.init,b.fx.tick=function(){var e,n=b.timers,r=0;for(Xn=b.now();n.length>r;r++)e=n[r],e()||n[r]!==e||n.splice(r--,1);n.length||b.fx.stop(),Xn=t},b.fx.timer=function(e){e()&&b.timers.push(e)&&b.fx.start()},b.fx.interval=13,b.fx.start=function(){Un||(Un=setInterval(b.fx.tick,b.fx.interval))},b.fx.stop=function(){clearInterval(Un),Un=null},b.fx.speeds={slow:600,fast:200,_default:400},b.fx.step={},b.expr&&b.expr.filters&&(b.expr.filters.animated=function(e){return b.grep(b.timers,function(t){return e===t.elem}).length}),b.fn.offset=function(e){if(arguments.length)return e===t?this:this.each(function(t){b.offset.setOffset(this,e,t)});var n,r,o={top:0,left:0},a=this[0],s=a&&a.ownerDocument;if(s)return n=s.documentElement,b.contains(n,a)?(typeof a.getBoundingClientRect!==i&&(o=a.getBoundingClientRect()),r=or(s),{top:o.top+(r.pageYOffset||n.scrollTop)-(n.clientTop||0),left:o.left+(r.pageXOffset||n.scrollLeft)-(n.clientLeft||0)}):o},b.offset={setOffset:function(e,t,n){var r=b.css(e,'position');'static'===r&&(e.style.position='relative');var i=b(e),o=i.offset(),a=b.css(e,'top'),s=b.css(e,'left'),u=('absolute'===r||'fixed'===r)&&b.inArray('auto',[a,s])>-1,l={},c={},p,f;u?(c=i.position(),p=c.top,f=c.left):(p=parseFloat(a)||0,f=parseFloat(s)||0),b.isFunction(t)&&(t=t.call(e,n,o)),null!=t.top&&(l.top=t.top-o.top+p),null!=t.left&&(l.left=t.left-o.left+f),'using'in t?t.using.call(e,l):i.css(l)}},b.fn.extend({position:function(){if(this[0]){var e,t,n={top:0,left:0},r=this[0];return'fixed'===b.css(r,'position')?t=r.getBoundingClientRect():(e=this.offsetParent(),t=this.offset(),b.nodeName(e[0],'html')||(n=e.offset()),n.top+=b.css(e[0],'borderTopWidth',!0),n.left+=b.css(e[0],'borderLeftWidth',!0)),{top:t.top-n.top-b.css(r,'marginTop',!0),left:t.left-n.left-b.css(r,'marginLeft',!0)}}},offsetParent:function(){return this.map(function(){var e=this.offsetParent||o.documentElement;while(e&&!b.nodeName(e,'html')&&'static'===b.css(e,'position'))e=e.offsetParent;return e||o.documentElement})}}),b.each({scrollLeft:'pageXOffset',scrollTop:'pageYOffset'},function(e,n){var r=/Y/.test(n);b.fn[e]=function(i){return b.access(this,function(e,i,o){var a=or(e);return o===t?a?n in a?a[n]:a.document.documentElement[i]:e[i]:(a?a.scrollTo(r?b(a).scrollLeft():o,r?o:b(a).scrollTop()):e[i]=o,t)},e,i,arguments.length,null)}});function or(e){return b.isWindow(e)?e:9===e.nodeType?e.defaultView||e.parentWindow:!1}b.each({Height:'height',Width:'width'},function(e,n){b.each({padding:'inner'+e,content:n,'':'outer'+e},function(r,i){b.fn[i]=function(i,o){var a=arguments.length&&(r||'boolean'!=typeof i),s=r||(i===!0||o===!0?'margin':'border');return b.access(this,function(n,r,i){var o;return b.isWindow(n)?n.document.documentElement['client'+e]:9===n.nodeType?(o=n.documentElement,Math.max(n.body['scroll'+e],o['scroll'+e],n.body['offset'+e],o['offset'+e],o['client'+e])):i===t?b.css(n,r,s):b.style(n,r,i,s)},n,a?i:t,a,null)}})}),e.jQuery=e.$=b,'function'==typeof define&&define.amd&&define.amd.jQuery&&define('jquery',[],function(){return b})})(window);";
		String scriptText = "function highlightLink(elem){var e=document.getElementById(elem);e.style.border='1px solid gray';e.style.borderRadius='5px';}"
				+ "function unHighlightLink(elem){var e=document.getElementById(elem);e.style.border='';}";
		Script script = new Script();
		script.setTagText("\n" + scriptText);
		return script;
	}

	public A getAnchorTag(String text, String linkText) {
		A link = new A();
		link.setHref(linkText);
		link.setTagText(text);
		return link;
	}

	public Div getCommandDescriptionDiv(String command, String usage,
			String description, int minArgs) {
		Div div = new Div();
		div.setClass("details-div");
		div.addElement("<a style='font-size:0px' name='" + command + "'></a>");
		H2 cmd = new H2();
		// cmd.setClass("details-div");
		cmd.setTagText(command);
		div.addElement(cmd);
		div.addElement(description + "<br/><br/>");
		div.addElement("<b># Min args to be passed: </b>"
				+ (minArgs > 0 ? minArgs : "None"));
		div.addElement(new Div("<br/>" + "<b>Usage</b>:<br/>"
				+ usage.replaceAll("\n", "<br/>").replaceAll("\t", "<li>")));
		return div;
	}

	public Table getSplitBodyTable() {
		Table splitBody = new Table();
		TR row = new TR();
		TD leftPane = new TD();
		TD rightPane = new TD();

		// left pane elements
		leftPane.setClass("left-pane");
		leftPane.setWidth("20%");
		leftPane.setStyle("position: fixed; width:17%");
		// right pane elements
		rightPane.setClass("right-pane");
		rightPane.setWidth("80%");

		row.addElement(leftPane);
		row.addElement(rightPane);
		splitBody.addElement(row);
		this.leftBodyPane = leftPane;
		this.rightBodyPane = rightPane;
		splitBody.setWidth("100%");
		return splitBody;
	}

	public A getSideBarLink(String text, String link) {
		A sidebarLink = getAnchorTag(text, link);
		String id = "ql-" + text.replaceAll("\\s+", " ").replaceAll(" ", "-");
		sidebarLink.setID(id);
		sidebarLink.addAttribute("onMouseOver", "highlightLink('" + id + "')");
		sidebarLink.addAttribute("onMouseOut", "unHighlightLink('" + id + "')");
		return sidebarLink;
	}

	public Table getCommandsTable() {
		Table table = new Table();
		table.setClass("cmd-table");
		table.setBorder(1);
		table.setCellPadding(1);
		table.setCellSpacing(0);
		table.setWidth("100%");
		Tr headRow = new Tr();
		table.addElement(headRow.addElement(new TH().setTagText("#")));
		table.addElement(headRow.addElement(new TH().setTagText("Command")));
		table.addElement(headRow.addElement(new TH().setTagText("Description")));
		// table.addElement(headRow.addElement(new TH().setTagText("Usage")));
		// table.addElement(headRow.addElement(new
		// TH().setTagText("Min # params")));
		int count = 0;
		for (AbstractCommand c : super.getCommandList()) {
			count += 1;
			Tr entry = new Tr();
			if (count % 2 == 0) {
				entry.setStyle("background-color: white");
			}
			table.addElement(entry.addElement(new TD().setAlign("CENTER")
					.setTagText(Integer.toString(count))));
			table.addElement(entry.addElement(new TD().addElement(getAnchorTag(
					c.getBaseCommand(), "#" + c.getBaseCommand()))));
			table.addElement(entry.addElement(new TD().setTagText(c
					.getDescription())));
			// table.addElement(entry.addElement(new
			// TD().setTagText(c.getUsage()
			// .replaceAll("\n", "<br/>").replaceAll("\t\t", "\t")
			// .replaceAll("\t", "<li>"))));
			// table.addElement(entry.addElement(new TD().setAlign("CENTER")
			// .setTagText(Integer.toString(c.getMinParams()))));
		}
		return table;
	}

	public void addLeftPaneElements() {
		leftBodyPane.addElement("Quick Links");
		leftBodyPane.addElement(new HR());
		leftBodyPane.addElement(getSideBarLink("About", "#ql-about") + "<br/>");
		leftBodyPane.addElement(getSideBarLink("Pre-requisites",
				"#ql-pre-requisites") + "<br/>");
		leftBodyPane.addElement(getSideBarLink("Setting up", "#") + "<br/>");
		leftBodyPane.addElement(getSideBarLink("Execution", "#ql-execution")
				+ "<br/>");
		leftBodyPane.addElement(getSideBarLink("Table of Commands", "#ql-table-of-commands") + "<br/>");
		leftBodyPane.addElement(getSideBarLink("Command usage",
				"#ql-overview-of-commands") + "<br/>");
		leftBodyPane.addElement(getSideBarLink("Logging", "#ql-logging")
				+ "<br/>");
	}

	public void addRightPaneElements() throws Exception {
		rightBodyPane
				.addElement("<p><h3><a name='ql-about'></a>About</h3></p>");
		rightBodyPane
				.addElement(getParagraph(
						"This document is the command specification for Razorthink Deployment Shell v1.0",
						""));
		rightBodyPane
				.addElement("<p><h3><a name='ql-pre-requisites'></a>Pre-requisites:</h3></p>");
		rightBodyPane
				.addElement(getParagraph(
						"Before running the app, make sure you have setup everything that's required. You will need <a href='http://www.python.org/download/releases/2.7/' target='_blank'>Python 2.7</a> and <a href='http://docs.fabfile.org/en/1.5/' target='_blank'>Fabric</a> module installed on your box, <i>PEM keyfile</i>, finally <i>[instance-properties-file/s]</i> (configuration files), which are specific to each remote server.",
						""));
		String template = FileUtils.readFileFromClassPath(this.getClass(),
				"instance-config-template.properties");
		rightBodyPane
				.addElement(getParagraph(
						"This is how a instance/server configuration looks like: ",
						""));
		rightBodyPane.addElement(getCodeBlock(template
				.replaceAll("\n", "<br/>")));
		rightBodyPane.addElement("<a name='ql-table-of-commands'></a><h3>List of commands:</h3>");
		rightBodyPane.addElement(new Center().addElement(getCommandsTable()));
		rightBodyPane
				.addElement("<h3><a name='ql-Execution'></a>Execution:</h3>The application runs in two modes: "
						+ "<li>Interpreter mode</li><li>Batch execution mode</li><br/>"
						+ "To run the application in the <i>Interpreter mode</i>, run the following command in your command shell/terminal:");
		rightBodyPane
				.addElement(getCodeBlock("$ java -jar [executable-shell.jar]"));
		rightBodyPane
				.addElement("<br/><p>To run the application in the <i>Batch execution mode</i>, run the following command in your command shell/terminal:</p>");
		rightBodyPane
				.addElement(getCodeBlock("$ java -jar [executable-shell.jar] --batch [batch-file.batch]"));
		rightBodyPane
				.addElement("<p><h3><a name='ql-overview-of-commands'></a>Overview of commands:</h3></p>");
		for (AbstractCommand c : super.getCommandList()) {
			rightBodyPane.addElement(getCommandDescriptionDiv(
					c.getBaseCommand(),
					c.getUsage().replaceAll("\n", "<br/>")
							.replaceAll("\t\t", "\t").replaceAll("\t", "<li>")
							.replace("Examples:", "<b>Examples:</b>")
							.replace("Options:", "<b>Options:</b>"),
					c.getDescription(), c.getMinParams()));
			rightBodyPane.addElement(new BR());
		}
		rightBodyPane
				.addElement("<p><h3><a name='ql-logging'></a>Logging:</h3></p>");
		rightBodyPane
				.addElement("<p><ul>"
						+ "<li>The app logs each command execution into log files.</li>"
						+ "<li>The history of commands executed will be logged into <i>logs/command-history.txt</i> file.</li>"
						+ "<li>The debug logs/stacktrace of commands executed will be logged into <i>logs/rzt-shell-log.log</i> file and <i>logs/rzt-shell-log-rollingfile.log</i> (which rolls over once the size exceeds 5 MB) and the command execution will also be logged into files in <i>logs/daily/[log.log]</i> the on a daily basis.</li>"
						+ "</ul></p>");

	}

	@Override
	public String getUsage() {
		return "gendoc [filename]";
	}

	@Override
	public String getDescription() {
		return "generate documentation of the shell commands and their usage";
	}
}
